This is a comprehensive SEO foundation builder for Next.js App Router projects. It handles the tedious but critical work: generating sitemaps and robots.txt, wiring up metadata and structured data, fixing soft 404s, setting up redirects, adding hreflang for international sites, and implementing security headers. The workflow is methodical, five steps from inventory to validation, with built in checklists and gotcha warnings for things like JSON-LD mismatches or broken canonical chains. Use it when you need to fix indexing issues, add schema markup, or harden technical SEO without touching visual design. The internationalisation and programmatic SEO sections are especially detailed. No fluff, just the infrastructure search engines need to crawl and rank your pages correctly.
npx skills add https://github.com/mblode/agent-skills --skill optimise-seo